I've used Gonakor from Mexico that comes with 2500IU of powder in a 10ml vial and a seperate 10ml vial of solvent.
However, right now I am using Pregnyl that comes with 5,000IU powder in a tiny 2ml vial and a seperate amp with 2ml of bacteriostatic water.
You can order empty vials and bacteriostatic water from places like ancillaryguys.com or finfarm.com and dilute your HCG however you'd like.
BTW, I'm not sure why this is but 1,500IU of Gonakor used to make my face flush red and it interferred with my erectile function. 1,500IU Pregnyl doesn't give me the flush and makes me horny as hell. I'll be sticking with Pregnyl from now on.